<template>
  <div>
    <!--面包屑导航区域-->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item><a href="/">用户管理</a></el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!--卡片视图区域-->
    <el-card>
      <!--搜索与添加区域-->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容"  v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!--用户列表区域-->
      <el-table :data="userList" border stripe>
        <el-table-column type="index"></el-table-column>   <!--快速添加索引列-->
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <el-tooltip class="item" effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!--分页区域-->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>

    <!--添加用户的对话框-->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed">
      <!--内容主体区域-->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!--底部区域-->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!--编辑修改用户的对话框-->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules"
               ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱">
          <el-input v-model="editForm.email" prop="email"></el-input>
        </el-form-item>
        <el-form-item label="手机">
          <el-input v-model="editForm.mobile" prop="mobile" disabled></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!--分配角色的对话框-->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo._rolename}}</p>
        <p>
          分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>

  </div>
</template>

<script>
export default {
  name: "Users",
  data: function () {
    /* 验证邮箱的规则 */
    var checkEmail = (rule, value, cb) => {
      const regEmail = /^([a-zA-Z]|[0-9])(\w|\-)+@[a-zA-Z0-9]+\.([a-zA-Z]{2,4})$/;
      if (regEmail.test(value)) {
        return cb();
      }
      cb(new Error("请输入合法的邮箱"))
    }
    /* 验证手机的规则 */
    var checkMobile = (rule, value, cb) => {
      const regMobile = /^[1][3,4,5,6,7,8,9][0-9]{9}$/;
      if (regMobile.test(value)) {
        return cb();
      }
      cb(new Error("请输入合法的手机号"))
    }
    return {
      /* 获取用户列表的参数对象 */
      queryInfo: {
        query: '',
        pagenum: 1,  /* 当前的页数 */
        pagesize: 2  /* 当前每页显示多少条数据 */
      },
      userList: [],
      total: 0,
      /* 控制添加用户对话框的显示与隐藏 */
      addDialogVisible: false,
      /* 添加用户的表单数据 */
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      /* 表单验证规则对象 */
      addFormRules: {
        username: [
          {required: true, message: '请输入用户名', trigger: 'blur'},
          {min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur'}
        ],
        password: [
          {required: true, message: '请输入密码', trigger: 'blur'},
          {min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur'}
        ],
        email: [
          {required: true, message: '请输入邮箱', trigger: 'blur'},
          {validator: checkEmail, trigger: 'blur'}
        ],
        mobile: [
          {required: true, message: '请输入手机', trigger: 'blur'},
          {validator: checkMobile, trigger: 'blur'}
        ]
      },
      /* 控制修改用户对话框的显示与隐藏 */
      editDialogVisible: false,
      /* 查询到的用户信息对象 */
      editForm: {},
      editFormRules: {
        email: [
          {required: true, message: '请输入用户邮箱', trigger: 'blur'},
          {validator: checkEmail, trigger: 'blur'}
        ],
        mobile: [
          {required: true, message: '请输入用户手机', trigger: 'blur'},
          {validator: checkMobile, trigger: 'blur'}
        ]
      },
      /* 控制分配角色对话框的显示与隐藏 */
      setRoleDialogVisible: false,
      /* 需要被分配角色的用户信息 */
      userInfo: {},
      /* 角色列表 */
      rolesList: [],
      /* 已选中的角色id值 */
      selectedRoleId:''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    /* 获取用户列表 */
    async getUserList() {
      const {data: res} = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status!==200){
        return this.$message.error('获取用户列表失败！')
      }
      this.userList = res.data.users;
      this.total = res.data.total;
    },
    /* 监听pagesize改变的事件 */
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize;
      this.getUserList();
    },
    /* 监听页码值改变的事件 */
    handleCurrentChange(newPage) {
      this.queryInfo.newPage = newPage;
      this.getUserList();
    },
    /* 监听switch开关状态的改变 */
    async userStateChanged(userinfo) {
      const {data: res} = await this.$http.put('users/${userinfo.id}/state/${userinfo.mg_state}')
      if (res.meta.status!==200){
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败！')
      }
      this.$message.success('更新用户状态成功！')
    },
    /* 监听添加用户对话框关闭事件(实现重置功能) */
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
    },
    /* 点击按钮添加用户 */
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if(!valid) return
        /* 可以发起添加用户的网络请求 */
        this.addDialogVisible=false;
        const {data: res} = await this.$http.post('users', this.addForm);
        if(res.meta.status !==201 ){
          this.$message.error("添加用户失败！")
        }
        this.$message.success("添加用户成功！")

        this.getUserList();
      })
    },
     /*展示修改用户的对话框 */
    async showEditDialog(id) {
      const {data: res} = await this.$http.get('users/' + id)
      if(res.meta.status !==200 ){
        this.$message.error("查询用户信息失败！")
      }
      this.editForm = res.data;
      this.editDialogVisible = true
    },
    /* 监听添加用户对话框关闭事件(实现重置功能) */
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    /* 修改用户信息并提交(实现预验证) */
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {

          if(!valid) return
          /* 可以发起修改用户的网络请求 */
         this.editDialogVisible=false;
          const {data: res} = await this.$http.put('users/' + this.editForm.id, {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          });
          if(res.meta.status !==201 ){
            this.$message.error("添加用户失败！")
          }
          this.$message.success("添加用户成功！")

          this.getUserList();
      })
    },
    /* 根据id删除对应的的用户信息 */
    async removeUserById(id) {
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)

      //如果用户确认了删除，则返回值为字符串confirm
      //如果用户取消了删除，则返回值为字符串cancel
      if(confirmResult !=="confirm") {
        return this.$message.info("已取消删除")
      }
      const {data: res} = await this.$http.delete('users/' + id)
        if(res.meta.status !==200 ){
          this.$message.error("删除用户失败！")
        }
        this.$message.success("删除用户成功！")
        this.getUserList();
    },
    /* 展示分配角色对话框 */
    async setRole(userInfo) {
      this.userInfo = userInfo;

      /* 展示分配角色对话框之前，获取所有角色列表 */
      const {data: res} = await this.$http.get('roles')
      if(res.meta.status !== 200){
        return this.$message.error("获取角色列表失败！")
      }
     this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    /* 点击确定按钮分配角色 */
    async saveRoleInfo() {
      if(!this.selectedRoleId){
        return this.$message.error("请选择要分配的角色！")
      }
      const {data: res} = await this.$http.post('users/${this.userInfo.id}/role',{
        rid: this.selectedRoleId
      })
      if(res.meta.status!==200){
        return this.$message.error("更新角色失败！")
      }
      this.$message.success("更新角色成功！")
      this.getUserList()
      this.setRoleDialogVisible = false

    },
    /* 监听分配角色对话框的关闭事件 */
    setRoleDialogClosed(){
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>

</style>
